1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* u_vars_next.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/14 17:19:27 by rbousset #+# #+# */
/* Updated: 2020/02/14 17:19:29 by rbousset ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include <libft.h>
#include <inttypes.h>
#include <stdlib.h>
#include <linux/limits.h>
#include "d_enum.h"
#include "s_lvars.h"
#include "s_struct.h"
#include "u_parse.h"
#include "u_utils.h"
static int64_t
u_get_env_var_line(const char varname[], t_msh *msh)
{
char **env_dup;
int64_t i;
env_dup = u_get_env_var_names(msh);
i = 0;
while (env_dup[i] != NULL &&
ft_strncmp(varname, env_dup[i], ft_strlen(env_dup[i]) + 1) != 0)
{
i++;
}
if (env_dup[i] == NULL)
{
i = -1;
}
ft_delwords(env_dup);
return (i);
}
static t_bool
u_get_custom_var_existance(const char varname[], t_msh *msh)
{
t_lvars *ptr;
ptr = msh->vars;
while (ptr &&
ft_strncmp(varname, ptr->name, ft_strlen(varname) + 1) != 0)
{
ptr = ptr->next;
}
if (ptr != NULL)
{
return (TRUE);
}
else
{
return (FALSE);
}
}
/* static void */
/* u_newval_subst(char newval_subst[], const char newval[]) */
/* { */
/* } */
/*
** void
** u_subst_var_value(const char varname[], const char newval[], t_msh *msh);
**
** DESCRIPTION
** The subst_var_value() changes the value of msh->envp
** variable varname[] with newval[]. If varname[] wasn't found
** in msh->envp, varname[] is searched in msh->vars. Otherwise
** varname[] is added to msh->vars.
*/
void
u_subst_var_value(const char varname[], const char newval[], t_msh *msh)
{
char new_line_fmt[ARG_MAX];
int64_t env_line;
if ((env_line = u_get_env_var_line(varname + 1, msh)) > -1)
{
ft_memdel((void*)&msh->envp[env_line]);
ft_sprintf(new_line_fmt, "%s=%s", varname + 1, newval);
if ((msh->envp[env_line] = (char*)malloc((ft_strlen(new_line_fmt) + 1) *
sizeof(char))) == NULL)
{
/* TODO: Handle this fail */
}
(void)ft_strlcpy(msh->envp[env_line],
new_line_fmt, ft_strlen(new_line_fmt) + 1);
}
else if ((env_line = u_get_custom_var_existance(varname + 1, msh)) == TRUE)
{
lvars_rebind(&msh->vars, varname + 1, newval);
}
else
{
lvars_add_front(&msh->vars, lvars_new(varname + 1, newval));
}
}
|
